'Three Days and Three Nights' in the Bible

and gave him a piece of fig-cake and two raisin-cakes, and he ate, and his spirit came again to him; for he had eaten no bread, nor drunk any water, for three days and three nights.

And Jehovah prepared a great fish to swallow up Jonah. And Jonah was in the belly of the fish three days and three nights.

For even as Jonas was in the belly of the great fish three days and three nights, thus shall the Son of man be in the heart of the earth three days and three nights.